PDF malware analysis — malicious · 9375d83a04917c25

MALICIOUS

PDF

36.9 KB Created: 2020-08-07 05:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bdad209ff378190894d1daee17f12645 SHA-1: a587beef521ed0d07bafda434b510336da5a8ba3 SHA-256: 9375d83a04917c255968a572806fbd03101234cd413989730085f9f6d6177d96

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=abrsm+grade+5+theory+past+papers+free+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the document body and heuristics strongly suggest a phishing or redirection attack.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.com/pify?keyword=abrsm+grade+5+theory+past+papers+free+pdf
- http://files.quintessence-abq.com/uploads/1/3/0/8/130815277/taxajuvidaf-nolex-peraxuxokupo-lipezubuxuja.pdf
- http://files.theworshipcenterbuildingproject.com/uploads/1/3/0/8/130813988/keraver.pdf
- http://files.highvoltagetestingdayton.com/uploads/1/3/0/8/130814229/4ac4c76b.pdf
- http://gefiwixa.hurstdesign.net/uploads/1/3/1/4/131453133/xiwuwod_safewuvutox_pufepaweget.pdf
- https://cdn.shopify.com/s/files/1/0432/9000/1572/files/tazilefolam.pdf
- https://cdn.shopify.com/s/files/1/0433/2067/2409/files/36911803717.pdf
- https://cdn.shopify.com/s/files/1/0437/7454/1981/files/29286097620.pdf
- https://cdn.shopify.com/s/files/1/0437/3220/5722/files/36537902352.pdf
- https://cdn.shopify.com/s/files/1/0431/7403/5607/files/sojitexamibuto.pdf
- https://cdn.shopify.com/s/files/1/0431/8307/9584/files/31160996628.pdf
- https://cdn.shopify.com/s/files/1/0436/3704/7449/files/internet_of_things_projects.pdf
- https://cdn.shopify.com/s/files/1/0430/7235/6513/files/64553081854.pdf
- https://cdn.shopify.com/s/files/1/0436/3078/8758/files/96604766882.pdf
- https://cdn.shopify.com/s/files/1/0439/2907/5880/files/premiere_pro_trial.pdf
- https://cdn.shopify.com/s/files/1/0432/3626/2052/files/d_d_5e_forest_gnome.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005068.bin` `94ef4f4278546f62a2c67c84cce4ea5d5766a24c7fe252601eabd826098cf498`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5068	5780 bytes
`font_01_sfnt_off000063f1.bin` `66b338b68a78d89078b6730fe3cd3819b2317abca47c0f8b2869d8578cade068`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63F1	10136 bytes

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